FR2053232B1 - - Google Patents

Info

Publication number
FR2053232B1
FR2053232B1 FR7023907A FR7023907A FR2053232B1 FR 2053232 B1 FR2053232 B1 FR 2053232B1 FR 7023907 A FR7023907 A FR 7023907A FR 7023907 A FR7023907 A FR 7023907A FR 2053232 B1 FR2053232 B1 FR 2053232B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7023907A
Other languages
French (fr)
Other versions
FR2053232A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of FR2053232A1 publication Critical patent/FR2053232A1/fr
Application granted granted Critical
Publication of FR2053232B1 publication Critical patent/FR2053232B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR7023907A 1969-07-29 1970-06-26 Expired FR2053232B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691938435 DE1938435B2 (en) 1969-07-29 1969-07-29 Hearing aid

Publications (2)

Publication Number Publication Date
FR2053232A1 FR2053232A1 (en) 1971-04-16
FR2053232B1 true FR2053232B1 (en) 1976-09-24

Family

ID=5741216

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7023907A Expired FR2053232B1 (en) 1969-07-29 1970-06-26

Country Status (6)

Country Link
CH (1) CH532876A (en)
DE (1) DE1938435B2 (en)
FR (1) FR2053232B1 (en)
GB (1) GB1296137A (en)
NL (1) NL7004267A (en)
SE (1) SE370484B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407815B (en) * 1990-07-13 2001-06-25 Viennatone Gmbh HEARING AID
CH681411A5 (en) * 1991-02-20 1993-03-15 Phonak Ag
US5524056A (en) 1993-04-13 1996-06-04 Etymotic Research, Inc. Hearing aid having plural microphones and a microphone switching system

Also Published As

Publication number Publication date
DE1938435B2 (en) 1974-05-02
CH532876A (en) 1973-01-15
GB1296137A (en) 1972-11-15
NL7004267A (en) 1971-02-02
FR2053232A1 (en) 1971-04-16
SE370484B (en) 1974-10-14
DE1938435A1 (en) 1971-02-11

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Legal Events

Date Code Title Description
ST Notification of lapse